It's no secret that puzzles are fun to solve, but when neuroscientist Richard Restak discovered new research that indicated puzzles could actually help the brain improve itself, he wondered: could puzzles help arrest mental deterioration? And do different types of puzzles enhance different parts of the brain? Meanwhile Scott Kim, a world-renowned puzzle developer, also became fascinated by the potential for puzzles to keep the brain nimble. Here these two experts present an engaging and informative book that gives readers the chance to work puzzles while also learning how puzzles work to boost their brainpower.